Mark,
 
I tried resizing, but all resizing does is create an extra partition with the 
excess space you trim by downsizing.   If you image the SD, it still copies all 
sectors of the entire card including the extra partition, so this will not work.
 
I called the medical equipment company that maintains the Cpap machine and 
asked them to send me a blank SD card from the machine's manufacturer.
That will probably be the only way I can do this, except for doing an mbr copy 
on the dissimilar SD cards then copying the data.
Actually, I should of done the latter in the first place, but now I've wasted 
the evening, so I give up.
 
Phil
 
From: Mark Komarinski [mailto:[email protected]] 
Sent: Monday, January 05, 2015 2:47 PM
To: Phil C.
Cc: [email protected]
Subject: Re: [HH] Different Mfg SD Cards will not format to same size
 
Regular hard drives have the same problems which makes it fun when you try to 
use different vendors for a RAID array (as in, don’t, and be sure to get the 
exact same model for replacement drive)
 
Can you try to resize the FAT32 partition down a touch so it’s maybe 3.5GB?  
Just be sure to keep the original image :)
 
-Mark
 
On Jan 5, 2015, at 2:30 PM, Phil C. <[email protected]> wrote:
 
I have an 4GB SD Card with data from my Sleep Apnea CPAP machine I have to 
clone to another SD card to send to the doctor for analysis.
 
The card that came with the machine was formatted FAT32 to 3.72GB.   I bought a 
Sandisk 4GB SD card and popped it in the reader and found it will only format 
to 3.69GB
 
I'm using Win32 Disk Imager for the cloning, and as far as I know I can't clone 
3.72GB into 3.69GB.    The souce SD has some kind of proprietary header or 
something in there so that I just can't copy the files.
 
I just can't figure out why the two 4GB SD cards have different formatted 
capacities.
 
Phil
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